I've been running more tests. In the last few days the data throughtput has been around 2-3Mbps DL on SFR 4G. It's 4:30am at the time of writing this entry. My data throughput has been around 16-18Mbps on DL for the last 2 hours. This is the sort of performance I expect to have at my location. I'll run some test again later today during normal hours.

The part I am unsure about is I appear to have a UK public IP address whilst my physical location is France. Does this mean all of my traffic is routed to the UK before it breaks out to the Internet? The other thing is that with a UK public IP address access to UK based service that would otherwise be barred from abroad is fully enabled. Any thoughts ?

Thanks PedroC - I thought so; it could contribute to the degradation in performance between day and night time. Is there a way to obtain a local public IP address and breakout locally rather than going back to the UK ?

The whole evening roaming has been COMPLETELY dead here in Italy. Speedtest won't even start, netperform shows 0.0mbps in download and not a single webpage will load. I'm using WiFi at the moment. You can also see the speedtest i did this morning on netperform (almost 115mbits download).

Same scenario here in France. The data throuhgput has gone sub 1Mbps and pretty much unusable for anything beyond emails. The performance is the same whether on SFR 4G (full bars i..e. optimal radio signal strength) or on Bouygues 4G (4/5 bars radio signal strength). The common denominator is Vodafone UK traffic going back to the UK.

Yes, I am having this issue con both 3g and 4g. Upload speeds are regular, as you can see I easily reach 20-30mbits on 4g, but download speeds are extremely low. All afternoon I have been barely getting 2-3mbits on both 3g and 4g, and later on in the evening internet completely dies (both 3g and 4g).

As said, this is not a problem with Vodafone Italy, since with a local sim I easily get 100-150mbits on 4g in the same location.

I am back in the UK having spent nearly two weeks roaming with my Vodafone UK SIM. I visited France, Belgium, Germany, Austria and the Netherlands and performance was absolutely super in all of them, I was regularly sustaining over 100mbps on many of the high spectrum sites.

I recently spent a week in Bulgaria as well. There, I also noticed that performance dropped heavily in the evenings, even though I had full 4g signal. Speeds dropped from 65-70mbits in the morning to about 5mbps in the evening. I never complained about this, because it was still perfectly usable.

Here in Italy, however, my speeds are consistently over 100 Mbits in the morning, and then drop off to about 2-3mbits in the afternoon before completely dying around 8 o'clock in the evening. At the moment I'm using WiFi. 4g/3g is completely dead, the speedtest won't even start and all webpages time out.

This is not an issue with local network, because as said before, testing a local Vodafone SIM consistently gives me results around or over 100mbps regardless of the time of the day

Hi, I have been abroad for a month now and have been having these speed issues for the past 3 weeks.

I have travelled in Switzerland, Bulgaria and Italy, and the problem has been present in all of these locations, with Italy being the worst (in italy the connection often completely dies or is under 1mbit, in switzerland and Bulgaria speeds dropped to about 5mbits in the evenings but never below). My account has 2 numbers, and both have been having the same issues.

I also have a spare Vodafone Italy sim card and tested this in Italy, Bulgaria and Switzerland (on roaming) with no issues whatsoever. Speeds never dropped below 50mbits in any of these locations, even when my UK sims were not working or very slow.

I have tried resetting my phone, doing a manual roam and also resetting the network settings on my device; however the problem persists and is present on all of the roaming partners.